Add Azure App Service to new VNet Integration preview - azure

Question

We want to connect an Azure App Service with our On Premise Network via the new VNet Integration (preview), which doesn't need any Point-to-Site Tunnel anymore.
We already achieved our goal via Azure Portal and now want to implement this in our DevOps Pipelines via ARM Template Deploy or Powershell.
ARM Template Deploy:
We generated the ARM Template from an exisiting App Service with new VNet Integration. Redeploy this Template doesn't add the new VNet Integration, but the old one (very strange):
{
"type": "Microsoft.Web/sites/virtualNetworkConnections",
"apiVersion": "2016-08-01",
"name": "[concat(parameters('sites_name'), parameters('subnet_name'))]",
"location": "West Europe",
"dependsOn": [
"[resourceId('Microsoft.Web/sites', parameters('sites_name'))]"
],
"properties": {
"vnetResourceId": "[concat(parameters('virtualNetworks_externalid'), '/subnets/XXXXXXX')]",
"certThumbprint": null,
"certBlob": null,
"routes": null,
"resyncRequired": false,
"dnsServers": null,
"isSwift": true
}
}
Powershell Deploy:
Trying this code will add the old VNet Integration as well:
$propertiesObject = #{
"vnetResourceId" = "/subscriptions/$($subscriptionId)/resourceGroups/$($vnet.ResourceGroupName)/providers/Microsoft.Network/virtualNetworks/$($vnet.Name)/subnets/$($subnetNameToAdd)"
}
$virtualNetwork = New-AzureRmResource -Location $location -Properties $PropertiesObject -ResourceName "$($webAppName)/$($vnet.Name)" -ResourceType "Microsoft.Web/sites/virtualNetworkConnections" -ApiVersion 2016-08-01 -ResourceGroupName $resourceGroupName -Force
Is this another new feature from Microsoft which is just half implemented and semi available?
(yeah, its in preview, but since several month...)

Answer 1

this is how I got it to work:
{
"name": "vnet_name/subnet_name",
"type": "Microsoft.Network/virtualNetworks/subnets",
"apiVersion": "2018-08-01",
"location": "[resourceGroup().location]",
"properties": {
"addressPrefix": "10.0.1.0/24",
"delegations": [
{
"name": "delegation",
"properties": {
"servicename": "Microsoft.Web/serverfarms"
}
}
]
}
},
{
"name": "webappname/virtualNetwork",
"properties": {
"subnetResourceId": "[resourceId('Microsoft.Network/virtualNetworks/subnets', 'vnet_name', 'subnet_name')]",
"swiftSupported": true
},
"dependsOn": [
"[resourceId('Microsoft.Network/virtualNetworks/subnets', 'vnet_name', 'subnet_name')]"
],
"type": "Microsoft.Web/sites/config",
"location": "[resourceGroup().location]",
"apiVersion": "2018-02-01"
}